Opel Flextreme GT/E Concept - going into the right direction

Opel is going to present its Opel Flextreme GT/E Concept at the Geneva Autoshow. Looking at this car, I must admit that this is going into the right direction! The design is impressive and technology wise it seems to be a car that combines usability with ecological savvyness. It's based on the coming Opel Ampera (2011) and combines an electrical motor (370 NM) and a range extender (1.4 l gasoline engine). It can run for 60 km only on electricity, adding the range extender it can go to 500 km. With 0-100 km/h in 9 secs and a top speed of more than 200 km/h it will not slow down traffic. With 1.6 l/100 km it would emit less than half CO2 than a Toyota Prius. However it's a bit unclear how you calculate these things for electrical cars still. It comes with four doors a some fancy aerodynamics gimmicks that probably will never make it into series production. With almost 4.8 m it's comparable in size to a BMW 5 series or Volkswagen Passat. So, let's see what Opel can save into production and what the price for such a toy would be.
P.S. I think it's a nice touch to call the concept car "GT/E", bringing back memories of fast and rallye proven Opel Kadett GT/E cars from the 70ies.